Compressor-pump.



Patented Dec. 3, I90].

.1. sum. COMPRESSOR PUMP.

' (Application filed Jan. 18, 19o 1.j

Invantar Ahomys \N: HF i 5 \ll N II] b (In mm.

Witnesses:

UNITED STATES PATENT OFFICE.

JOSEPH SLOAN, OF HOBOKEN, NEW JERSEY, ASSIGNOR TO THE GENERAL REFRIGERATION COMPANY, OF I-IOBOKEN, NEW JERSEY, A CORPORA- TION OF NEWV JERSEY.

COMPRESSOR-PUMP.

SPECIFICATION forming part of Letters Patent No. 688,033, dated December 3, 1901.

Application filed January 18, 1901. Serial No- 43,743. (No model.)

To all whom it may concern: actuating a rod 11, connected with a piston 12, '30

Be it known that I, JOSEPH SLOAN, a citizen working in the cylinder, as shown. Mounted of the United States, residing at Hoboken, in on the shaft 9, between the two cranks 1O 10,

the county of Hudson and State of New Jeris an eccentric 13, provided with a strap 14,

5 sey, have inventedcortain new and useful Imconnected to an operating-rod for the valve provements in Compressor-Pumps, of which mechanism, said operating-rod working in a the following is a description. chamberlG, formed between the two cylinders My invention relates to improvements in 3 and 4, as shown. The valve-chamber 17 is compressor-pumps for compressing gases and preferably cast integrally with the cylinders,

IO vapors; and my object is to provide a simple, as shown, said chamber being provided with compact, cheap, and effective apparatus for a cylindrical bore connecting with the cylinthe purpose. ders by an elongated port 18. Mounted in the In order that the invention may be better valve-chamber is a cylindrical valve 19, from understood, attention is directed to the accomwhich extends an arm 20, working in a slot 21 I5 panying drawings, forming part of this speciin the valve-chamber, and said arm is confication, and in which nected to the rod 15, whereby the rotation of Figure 1 is a front elevation, partlyin secthe eccentric 13 will properly oscillate the tion, of the device; Fig. 2, an end View, partly valve, as will be obvious. The valve 19 is proin section, the section being taken on the line vided with ports 22 therein, adapted to regis- 20 AB of Fig. 1; Fig. 3, asection on the line E F ter, respectively, with the ports 18, opening of Fig. 1, and Fig. 4 a section on the line C D into the cylinders, and on its exterior the valve of Fig. 1. is provided wit-h pockets 23, adapted also In all of the above views corresponding to register with said ports. An internallyparts are represented by the same numerals threaded nipple 21 is formed on the valve- 25 of reference. chamber opposite each of the pockets 23,

Although in the drawings I illustrate myinwherebya gas or fluid will be permitted to envention in connection with a pump employing ter each cylinder or to be forced out of each two oylinders,it will be obvious that one,three, cylinder through said nipple when the pocket or more cylinders may be utilized for carrying registers with the cylinder-port. The valve- 30 the invented idea into effect. chamber 17 is provided with two end caps 25,

The base 1 of the pump is made in the form each being formed with an internally-threadof a hollowbed, forming the lower half of an ed nipple 26, which communicates with the inclosed crank-casing, the upper half 2being bore of the valve; A plug 27 is normally preferably cast with the cylinders 3 4 and beadapted to be engaged with one or the other 35 ing pivoted to the bed by hinges 5. The joint of the nipples 26 to close the same, although between the upper section 2 of the casing and it will be understood that an admission or the bed is dovetailed all around, as shown at discharge pipe may connect with each of said 6, whereby the casing will be made sufficiently nipples. tight to contain oil for lubricating, if desired, In operation the gas or vapor to be com- 0 or for containing Water for cooling purposes. pressed may enter the pump through the nip- The upper section 2 of the crank-casing is ples 26, be drawn by suctionthrough the 1101- preferably cast with the upper halves of the low valve successively into the cylinders, and split bearing-boxes 7 7, which may be lined be compressed and forced out of each cylin- With a suitable antifriction metal, as shown, der through the port 18, nipple 24, and port 4; and the lining-sleeves may be heldin position 22, or the reverse operation may take place,

by removable lower halves 8, bolted in place. the gas or vapor being drawn into each cyl- 5 The operating-shaft 9 is mounted in the bearinder through the latter nipple and being ings thus formed and is furnished with a forced out of each cylinder through the ports crank 10 for each cylinder, each of said cranks 18 and 22 into the hollow valve and thence through one or both of the nipples 26. Either operation may be made to take place by properly proporti'oning the location of the eccentric 13 to oscillate the valve 19 to bring the port 22 or the pocket 23 into registration with the port 18 on the suction or compression stroke of the piston, whichever may be desired. Preferably the ports and pockets in the cylindrical valve are so arranged that when the gas or vapor is being compressed by one cylinder the other cylinder will be drawing by suction a fresh supply of the gas or vapor therein, whereby the cylinders will operate in alternation, as shown. It will be understood, however, that the pistons may be arranged to operate simultaneously, in which case the ports and pockets for all the cylinders willbe correspondinglylocated in or upon the valve.

It will be seen that my improved compressor-pump is extremely simple in construction and is of etfective operation. By making the crank-casing of two parts, as explained, it will be seen that the cylinders may be swu mg to one side, so as to disclose the bed or foundation, in order to permit fresh quantities of oil or cooling liquid to be introduced therein or to allow the operating parts to be reached for purposes of repair.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is as follows:

1. In a compressor-pump, the combination of a divided crank-casing, the upper part of which is hinged to the lower part, a cylinder carried by the upper part of the crank-casing, a piston in the cylinder, an operating-shaft mounted in bearing-boxes carried by the upper part of the crank-casing, a crank on the operating-shaft, connections between the piston and the crank, and valve mechanism, sub; stantially as and for the purposes set forth.

2. In a compressor-pump, the combination with a pair of cylinders, a valve-rod chamber between them, and a cylindrical valve-chamber above thecylinders, all cast in one piece, of a crank-shaft, pistons in the cylinders connected with said crank-shaft, an eccentric on the crank-shaft, a valve-rod connected with the eccentric and located in the valve-rod chamber,and an oscillating valve in the valvechamber connected with the valve-rod, substantially as and for the purposes set forth.

This specification signed and witnessed this 14th day of January, 1901.

JOSEPH SLOAN.

\Vitnesses:

GEO. B. FIELDER, Jr., J. M. CoYLE. 

